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Separate initing the stdout/stderr for running the Python Script interpreter from initing the lldb.target/frame/etc globals, 

and only do the latter when it makes sense to.

<rdar://problem/12554049>

llvm-svn: 169614
This commit is contained in:
Jim Ingham 2012-12-07 17:43:38 +00:00
parent ea2824dc88
commit 6a51085e09
3 changed files with 43 additions and 34 deletions
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7
lldb/include/lldb/Interpreter/ScriptInterpreterPython.h
View File

@ -203,7 +203,7 @@ public:
protected:
void
EnterSession ();
EnterSession (bool init_lldb_globals);
void
LeaveSession ();
@ -264,7 +264,8 @@ private:
enum OnEntry
{
AcquireLock = 0x0001,
InitSession = 0x0002
InitSession = 0x0002,
InitGlobals = 0x0004
};
enum OnLeave
@ -287,7 +288,7 @@ private:
DoAcquireLock ();
bool
DoInitSession ();
DoInitSession (bool init_lldb_globals);
bool
DoFreeLock ();

4
lldb/source/Core/Module.cpp
View File

@ -1179,7 +1179,9 @@ Module::LoadScriptingResourceInTarget (Target *target, Error& error)
{
StreamString scripting_stream;
scripting_fspec.Dump(&scripting_stream);
bool did_load = script_interpreter->LoadScriptingModule(scripting_stream.GetData(), false, true, error);
const bool can_reload = false;
const bool init_lldb_globals = false;
bool did_load = script_interpreter->LoadScriptingModule(scripting_stream.GetData(), can_reload, init_lldb_globals, error);
if (!did_load)
return false;
}

52
lldb/source/Interpreter/ScriptInterpreterPython.cpp
View File

@ -150,8 +150,8 @@ ScriptInterpreterPython::Locker::Locker (ScriptInterpreterPython *py_interpreter
m_tmp_fh = (m_python_interpreter->m_dbg_stdout ? m_python_interpreter->m_dbg_stdout : stdout);
DoAcquireLock();
if ( (on_entry & InitSession) == InitSession )
DoInitSession();
if ((on_entry & InitSession) == InitSession)
DoInitSession((on_entry & InitGlobals) == InitGlobals);
}
bool
@ -165,11 +165,11 @@ ScriptInterpreterPython::Locker::DoAcquireLock()
}
bool
ScriptInterpreterPython::Locker::DoInitSession()
ScriptInterpreterPython::Locker::DoInitSession(bool init_lldb_globals)
{
if (!m_python_interpreter)
return false;
m_python_interpreter->EnterSession ();
m_python_interpreter->EnterSession (init_lldb_globals);
return true;
}
@ -308,7 +308,7 @@ ScriptInterpreterPython::PythonInputReaderManager::InputReaderCallback
if (pty_slave_name != NULL && PyThreadState_GetDict() != NULL)
{
ScriptInterpreterPython::Locker locker(script_interpreter,
ScriptInterpreterPython::Locker::AcquireLock | ScriptInterpreterPython::Locker::InitSession,
ScriptInterpreterPython::Locker::AcquireLock | ScriptInterpreterPython::Locker::InitSession | ScriptInterpreterPython::Locker::InitGlobals,
ScriptInterpreterPython::Locker::FreeAcquiredLock);
run_string.Printf ("run_one_line (%s, 'save_stderr = sys.stderr')", script_interpreter->m_dictionary_name.c_str());
PyRun_SimpleString (run_string.GetData());
@ -602,7 +602,7 @@ ScriptInterpreterPython::LeaveSession ()
}
void
ScriptInterpreterPython::EnterSession ()
ScriptInterpreterPython::EnterSession (bool init_lldb_globals)
{
// If we have already entered the session, without having officially 'left' it, then there is no need to
// 'enter' it again.
@ -614,20 +614,16 @@ ScriptInterpreterPython::EnterSession ()
StreamString run_string;
if (init_lldb_globals)
{
run_string.Printf ( "run_one_line (%s, 'lldb.debugger_unique_id = %" PRIu64, m_dictionary_name.c_str(), GetCommandInterpreter().GetDebugger().GetID());
run_string.Printf ( "; lldb.debugger = lldb.SBDebugger.FindDebuggerWithID (%" PRIu64 ")", GetCommandInterpreter().GetDebugger().GetID());
run_string.PutCString ("; lldb.target = lldb.debugger.GetSelectedTarget()");
run_string.PutCString ("; lldb.process = lldb.target.GetProcess()");
run_string.PutCString ("; lldb.thread = lldb.process.GetSelectedThread ()");
run_string.PutCString ("; lldb.frame = lldb.thread.GetSelectedFrame ()");
// Make sure STDIN is closed since when we run this as an embedded
// interpreter we don't want someone to call "line = sys.stdin.readline()"
// and lock up. We don't have multiple windows and when the interpreter is
// embedded we don't know we should be feeding input to the embedded
// interpreter or to the python sys.stdin. We also don't want to let python
// play with the real stdin from this process, so we need to close it...
//run_string.PutCString ("; sys.stdin.close()");
run_string.PutCString ("')");
}
PyRun_SimpleString (run_string.GetData());
run_string.Clear();
@ -720,7 +716,7 @@ ScriptInterpreterPython::ExecuteOneLine (const char *command, CommandReturnObjec
// method to pass the command string directly down to Python.
Locker locker(this,
ScriptInterpreterPython::Locker::AcquireLock | (options.GetSetLLDBGlobals() ? ScriptInterpreterPython::Locker::InitSession : 0),
ScriptInterpreterPython::Locker::AcquireLock | ScriptInterpreterPython::Locker::InitSession | (options.GetSetLLDBGlobals() ? ScriptInterpreterPython::Locker::InitGlobals : 0),
ScriptInterpreterPython::Locker::FreeAcquiredLock | (options.GetSetLLDBGlobals() ? ScriptInterpreterPython::Locker::TearDownSession : 0));
bool success = false;
@ -842,7 +838,9 @@ ScriptInterpreterPython::InputReaderCallback
{
ScriptInterpreterPython::Locker locker(script_interpreter,
ScriptInterpreterPython::Locker::AcquireLock | ScriptInterpreterPython::Locker::InitSession,
ScriptInterpreterPython::Locker::AcquireLock
| ScriptInterpreterPython::Locker::InitSession
| ScriptInterpreterPython::Locker::InitGlobals,
ScriptInterpreterPython::Locker::FreeAcquiredLock);
}
@ -887,7 +885,9 @@ ScriptInterpreterPython::InputReaderCallback
case eInputReaderReactivate:
{
ScriptInterpreterPython::Locker locker(script_interpreter,
ScriptInterpreterPython::Locker::AcquireLock | ScriptInterpreterPython::Locker::InitSession,
ScriptInterpreterPython::Locker::AcquireLock
| ScriptInterpreterPython::Locker::InitSession
| ScriptInterpreterPython::Locker::InitGlobals,
ScriptInterpreterPython::Locker::FreeAcquiredLock);
}
break;
@ -992,7 +992,9 @@ ScriptInterpreterPython::ExecuteOneLineWithReturn (const char *in_string,
{
Locker locker(this,
ScriptInterpreterPython::Locker::AcquireLock | (options.GetSetLLDBGlobals() ? ScriptInterpreterPython::Locker::InitSession : 0),
ScriptInterpreterPython::Locker::AcquireLock
| ScriptInterpreterPython::Locker::InitSession
| (options.GetSetLLDBGlobals() ? ScriptInterpreterPython::Locker::InitGlobals : 0),
ScriptInterpreterPython::Locker::FreeAcquiredLock | (options.GetSetLLDBGlobals() ? ScriptInterpreterPython::Locker::TearDownSession : 0));
PyObject *py_return = NULL;
@ -1161,7 +1163,9 @@ ScriptInterpreterPython::ExecuteMultipleLines (const char *in_string, const Exec
Locker locker(this,
ScriptInterpreterPython::Locker::AcquireLock | (options.GetSetLLDBGlobals() ? ScriptInterpreterPython::Locker::InitSession : 0),
ScriptInterpreterPython::Locker::AcquireLock
| ScriptInterpreterPython::Locker::InitSession
| (options.GetSetLLDBGlobals() ? ScriptInterpreterPython::Locker::InitGlobals : 0),
ScriptInterpreterPython::Locker::FreeAcquiredLock | (options.GetSetLLDBGlobals() ? ScriptInterpreterPython::Locker::TearDownSession : 0));
bool success = false;
@ -2171,7 +2175,7 @@ ScriptInterpreterPython::RunEmbeddedPythonInterpreter (lldb::thread_arg_t baton)
// we can just release the GIL after finishing our work.
// If finer-grained locking is desirable, we can lock and unlock the GIL only when calling a python function.
Locker locker(script_interpreter,
ScriptInterpreterPython::Locker::AcquireLock | ScriptInterpreterPython::Locker::InitSession,
ScriptInterpreterPython::Locker::AcquireLock | ScriptInterpreterPython::Locker::InitSession | ScriptInterpreterPython::Locker::InitGlobals,
ScriptInterpreterPython::Locker::FreeAcquiredLock | ScriptInterpreterPython::Locker::TearDownSession);
run_string.Printf ("run_one_line (%s, 'save_stderr = sys.stderr')", script_interpreter->m_dictionary_name.c_str());
@ -2443,7 +2447,7 @@ ReadPythonBacktrace (PyObject* py_backtrace)
bool
ScriptInterpreterPython::LoadScriptingModule (const char* pathname,
bool can_reload,
bool init_lldb_globals,
bool init_session,
lldb_private::Error& error)
{
if (!pathname || !pathname[0])
@ -2476,8 +2480,8 @@ ScriptInterpreterPython::LoadScriptingModule (const char* pathname,
// Before executing Pyton code, lock the GIL.
Locker py_lock (this,
Locker::AcquireLock | (init_lldb_globals ? Locker::InitSession : 0),
Locker::FreeAcquiredLock | (init_lldb_globals ? Locker::TearDownSession : 0));
Locker::AcquireLock | (init_session ? Locker::InitSession : 0),
Locker::FreeAcquiredLock | (init_session ? Locker::TearDownSession : 0));
// now make sure that Python has "directory" in the search path
StreamString command_stream;
@ -2631,7 +2635,9 @@ ScriptInterpreterPython::RunScriptBasedCommand(const char* impl_function,
std::string err_msg;
{
Locker py_lock(this);
Locker py_lock(this,
Locker::AcquireLock | Locker::InitSession | Locker::InitGlobals,
Locker::FreeLock | Locker::TearDownSession);
SynchronicityHandler synch_handler(debugger_sp,
synchronicity);